必修3-unit3-表语从句.doc

表语从句
【教学内容】表语从句
【教学日标】熟练掌握表语从句的用法
【教学重难点】连接词的使用
【教学过程】
什么是表语从句：在句中作表语的从句称为表语从句。

能引导宾语从句的连词皆可引导表语从句。

例：1 .She is a girl.
2.The question is who are you.(整个句子作表语■)
▼表语从句的连接词
引导表语从句的连接词主要有以下几类：
一、从属连词
引导表语从句的从属连词有that和whether.that和whether在表语从句中不作任何成分，that无具体意义, whether仍有“是否”的意义。

—>The reason for your mistake is (that) you lack confidence in yourself.你犯错误的原因是你本身缺乏信心。

—>The question is whether we can reduce the cost of the product.问题是我们能否降低产品的成本。

注：一般不用if引导表语从句。

二、连接代词
引导表语从句的连接代词主要Tf who(cvcr),whom(cvcr),whosc(cvcr),what(cvcr),which(cvcr)等
—>This is what I am interested in.这就是我所感兴趣的。

一The doubt is who has got away with the document.疑点就是谁拿走了文件。

—>Actually,girls can be whatever they want to be just like boys, whether it is a pilot, an astronaut, or a manager.
实际上，女孩可以和男孩一样想从事什么职业就从事什么职业——不管是飞行员、宇航员还是总经理。

三、连接副词
引导表语从句的连接副词主要when(ever),where(ver),why,how(ever)等
—That was where we can camped last time.那就是上次我们野营的地方。

—>The question is however we can do the work better.问题是我们究竟如何才能将这项I .作做得更好。

一What I wonder is when he left.我想知道他是何时离开的。

—>That is why he didn't come here.那就是他没到这儿来的原因。

四、其他连接词另外，because, as if, as though, as, like等连接词也可引导表语从句。

—>He has heart disease. That is because he has been smoking too much.他有心胀病，那是因为他抽烟太多了。

一She seems as if she had done a great thing.她看起来好像做了一件大事。

—>Things are not always as they seem to be.事物并不总是如其表象。

【牛刀小试】填入适当的连接词
1.My question is who left.
2.That is what he want.
3.This is where they once lived.
4.My question is whether he left or not.
5.It's just because he doesn't know her.
6-He looks as if he's tired.
7.The truth is that I didn't go there.
▼ be+表语从句
最常见的表语从句形式就是“连系动词be+表语从句”
—>My question is however we can find such a plant in this forest.
我的问题是我们研究如何才能在这片森林中找到这种植物。

—>The reason for his being absent from the conference was that he was delayed by the accident.
他没来开会的原因是他被一场事故耽误了。

—>This is how we got out of trouble then.
这就是当时我们如何脱离困境的。

▼其他连系动词+表语从句
除be以外，可用于表语从句的连系动词还有seem,look,appear,sound,taste,feel,remain等
—>It looks as if it is going to rain.看来要卜雨了。

—>It sounds as if you arc from the south of the States.听起来你好像来自美国南部。

【活学活用】翻译句子
1.看来他没赶上火车。

It seems (that) he was late for the train.
2.看来她错了o It appears that she was wrong.
3.在我看来，我们似乎,应该对此事负责。

It seems to me that that wc should answer for this.
4.在她看来，他似乎•要把他所会的都教给我们。

It appears to her that he wants to teach us all he has.
▼表语从句中需要注意的问题
©reason作主语时的表语从句
主语为名词reason时，表语从旬中的连接词要用that, tflj不用why或because.而用that,this,it作主语时，后面的表语从句可用because或why引导
—>The reason for such a serious accident is that the driver was too careless and drunk.
这么严重的交通事故完全是由于司机太粗心，喝酒太多造成的。

（不能用because或why）
—>He didn'l come to school yesterday.That was because he fell ill.
他昨天没来上学，那是因为他病倒了。

—>He fell ill. That's why he didift come to school yesterday.
他病倒了，那就是他昨天没来上学的原因。

%1表语从句中的虚拟语气
如主句的主语是advice,suggestion,order,request,requirement等名词时，表语从句的谓语动词常用虚拟语气, 即主语无论是单数或复数，谓语一•律用“（should+）动词原形”的形式。

—>My suggestion is that we （should） have a discussion about this matter instead of just laying it aside.
我的建议就是我们应当讨论一下这个问题，而不应该把它放在一边。

一The captain's order was that we （should） start out immediately it got dawn.
船长的命令是天一亮我们就出发。

%1使用连接词时的注意事项
从属连词that在句中不作成分，也没有实际意义，在FI语中一般可省略。

而whether虽然在从句中不作成分，但含有“是否”的意义，不能省略。

连接代词和连接副词在从句中都作成分，同时也含有自己的意义。

连接代词和连接副词一般都表疑问，但what,when,where等连接词有两种含义，一种表示疑问，一种表示陈述，相当于the thing that, the time when, the place where 等。

—>What we will discuss today is who will be the chairman.
我们今天要讨论的就是谁将担任主席的问题。

（表示疑问）
—What I want to know is where I can live tonight.
我想知道的是今晚我住在哪儿。

（表示疑问）
—>This is where （= the place where） we found the interest.
这就是我们发现的兴趣所在。

（表示陈述）
—>My topic today is what （=the thing that） most scientists are researching.
我今天的话题就是大多数科学家正在研究的课题。

（表示陈述）
【随堂练习】单项选择
1 .I'm afraid he's more of a talker than a doer,which isDhe never finishes anything.
A.that
B.when
C. where
D.why
2.rd like to start my own business ----- t hat's D I'd do if had the money.
A.why
B.when
C.which
D.what
3.Part of the reason Charles Dickens loved his own novel,David Copperfield, was B it was rather
closely modeled on his own life.
A.what
B.that
C.why
D.whether
4.Thc last time wc had great fun was C wc were visiting the Water Park.
A. where
B.how
C.when
D.why
5.What is concerning us greatly is C the workers held up in that area yesterday will be set free.
A.that
B.what
C.when
D.which
6.The brave national spirit showed in the film The Flowers of War are D deeply moved the audience.
A.which
B.that
C.who
D.what
7. B Made the school proud was more than 90% of the students had been admitted to key universities.
A.What;bccausc
B.What;that
C.That;what
D.That;bccausc
【课后作业】单项选择
l.The reason why the explosion occurred was D the laboratory attendant had been careless.
A.for
B.because
C.since
D.that
2.See the flags on the top of the buildings? That was D wc did this morning.
A.when
B.which
C.where
D.what
3.One advantage of playing the guitar is C it can give you a great deal of pleasure.
A.how
B.why
C.that
D.when
4.If that was A he told me, he was telling lies.
A.what
B.it
C.which
D.that
5.The Amazon's dry season, from July to September, is D some people cut and burn the rain-forest.
A.how
B.that
C.where
D.when
6.Thc place C the bridge is supposed to be built should be the cross river traffic is the heaviest.
A.which;where
B.at which;which
C.at which;where
D.which;in which
7.Recently many people have no intention of buying a house. --- 1 think the reason may be A the house price is too high.
A.that
B.why
C.because
D.which
8.What the doctor is uncertain about is C my mother will recover from the serious disease soon.
A.when
B.how
C.whether
D.why。